Since I've gotten my Spec V shipped to Germany I have been able to drive it a little faster than I normally would in the States. While on the Autobahn I was curious what my average fuel mileage would be at my normal 110 MPH cruising speed (a speed that the cruise control won’t allow.) I was pretty happy with the 22 MPG that the computer reports that I get. This number, and the available power at that speed, drops noticeably if the A/C is on.